Backport of [QT-616] Add seal_ha enos scenario into release/1.14.x

[hc-github-team-secure-vault-core]

Backport

This PR is auto-generated from #23812 to be assessed for backporting due to the inclusion of the label backport/1.14.x.

The below text is copied from the body of the original PR.

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Add support for testing Vault Enterprise with HA seal support by adding a new seal_ha scenario that configures more than one seal type for a Vault cluster. We also extend existing scenarios to support testing with or without the Seal HA code path enabled.

• Extract starting vault into a separate enos module to allow for better handling of complex clusters that need to be started more than once.
• Extract seal key creation into a separate module and provide it to target modules. This allows us to create more than one seal key and associate it with instances. This also allows us to forego creating keys when using shamir seals.
• QT-615 Add support for configuring more that one seal type to vault_cluster module.
• QT-616 Add seal_ha scenario
• QT-625 Add seal_ha_beta variant to existing scenarios to test with both code paths.
• Unpin action-setup-terraform

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Overview of commits

• a46def2

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